I. L. Caldas, Viana, R. L., Szezech, J. D., PORTELA, J. S. E., da Fonseca, J. D., Roberto, M., Martins, C. G. L., and da Silva, E. J., “Nontwist symplectic maps in tokamaks”, Communications in Nonlinear Science and Numerical Simulation, vol. 17, no. 5, pp. 2021 - 2030, 2012.

• DOI
• Google Scholar
• BibTex

 (2.08 MB)

J. S. E. PORTELA, Caldas, I. L., and Viana, R. L., “Tokamak magnetic field lines described by simple maps”, The European Physical Journal Special Topics, vol. 165, no. 1, pp. 195 - 210, 2008.

• DOI
• Google Scholar
• BibTex

 (32.21 MB)

J. S. E. PORTELA, Caldas, I. L., Viana, R. L., and Morrison, P. J., “DIFFUSIVE TRANSPORT THROUGH A NONTWIST BARRIER IN TOKAMAKS”, International Journal of Bifurcation and Chaos, vol. 17, no. 05, pp. 1589 - 1598, 2007.

• DOI
• Google Scholar
• BibTex

 (4.86 MB)

J. S. E. PORTELA, Caldas, I. L., Viana, R. L., and Sanjuan, M. A. F., “FRACTAL AND WADA EXIT BASIN BOUNDARIES IN TOKAMAKS”, International Journal of Bifurcation and Chaos, vol. 17, no. 11, pp. 4067 - 4079, 2007.

• DOI
• Google Scholar
• BibTex

 (1.94 MB)

E. C. da Silva, Roberto, M., PORTELA, J. S. E., Caldas, I. L., and Viana, R. L., “Escaping and transport barrier due to ergodic magnetic limiters in tokamaks with reversed magnetic shear”, Nuclear Fusion, vol. 46, no. 4, pp. S192 - S198, 2006.

• DOI
• Google Scholar
• BibTex

 (1.21 MB)

J. S. E. PORTELA, Viana, R. L., and Caldas, I. L., “Chaotic magnetic field lines in a Tokamak with resonant helical windings”, Chaos, Solitons & Fractals, vol. 11, no. 5, pp. 765 - 778, 2003.

• DOI
• Google Scholar
• BibTex

 (2.94 MB)